Fix for bug #20665 All commands supported in Stored Procedures

should work in Prepared Statements. Post-review changeset.

Problem: There are some commands which are avaiable to be executed in SP
         but cannot be prepared. This patch fixes this and makes it possible
         prepare these statements.

Changes: The commands later are made available in PS. RESET has been forbidden
         in SF/Trigger.

Solution: All current server commands where checked and those missing (see later)
          we added. Tests for all of the commands with repeated executions were
          added - testing with SP, SF and PS.

SHOW BINLOG EVENTS
SHOW (MASTER | SLAVE) STATUS
SHOW (MASTER | BINARY) LOGS
SHOW (PROCEDURE | FUNCTION) CODE (parsable only in debug builds)
SHOW CREATE (PROCEDURE | FUNCTION | EVENT | TABLE | VIEW)
SHOW (AUTHORS | CONTRIBUTORS | WARNINGS | ERRORS)
CHANGE MASTER
RESET (MASTER | SLAVE | QUERY CACHE)
SLAVE (START | STOP)
CHECKSUM (TABLE | TABLES)
INSTALL PLUGIN
UNINSTALL PLUGIN
CACHE INDEX
LOAD INDEX INTO CACHE
GRANT
REVOKE
KILL
(CREATE | RENAME | DROP) DATABASE
(CREATE | RENAME | DROP) USER
FLUSH (TABLE | TABLES | TABLES WITH READ LOCK | HOSTS | PRIVILEGES |
       LOGS | STATUS | MASTER | SLAVE | DES_KEY_FILE | USER_RESOURCES)


mysql-test/r/ps.result:
  update result
mysql-test/r/ps_1general.result:
  update result
mysql-test/r/ps_grant.result:
  update result
mysql-test/r/sp-dynamic.result:
  update result
mysql-test/t/ps.test:
  Add more statements, probably all currently missing which are possible in
  a SP but not preparable.
  Every statement is tested in a SP, in a SF and attempted to prepare.
mysql-test/t/ps_1general.test:
  - Enable some of the statements, which are already possible in SP.
  - 1295 -> ER_UNSUPPORTED_PS
mysql-test/t/ps_grant.test:
  Enable statements already possible in SP.
sql/sp_head.cc:
  - Reorder to keep some alphabet order.
  - Add missing SHOW_SCHEDULER_STATUS.
sql/sql_prepare.cc:
  Add possibility to prepare statements, which are already allowed in SP.

mysql-test/r/ps_1general.result

@@ -308,17 +308,11 @@ prepare stmt4 from ' show engine bdb logs ';
 execute stmt4;
 prepare stmt4 from ' show grants for user ';
 prepare stmt4 from ' show create table t2 ';
-ERROR HY000: This command is not supported in the prepared statement protocol yet
 prepare stmt4 from ' show master status ';
-ERROR HY000: This command is not supported in the prepared statement protocol yet
 prepare stmt4 from ' show master logs ';
-ERROR HY000: This command is not supported in the prepared statement protocol yet
 prepare stmt4 from ' show slave status ';
-ERROR HY000: This command is not supported in the prepared statement protocol yet
 prepare stmt4 from ' show warnings limit 20 ';
-ERROR HY000: This command is not supported in the prepared statement protocol yet
 prepare stmt4 from ' show errors limit 20 ';
-ERROR HY000: This command is not supported in the prepared statement protocol yet
 prepare stmt4 from ' show storage engines ';
 execute stmt4;
 drop table if exists t5;
@@ -387,10 +381,8 @@ ERROR 42000: You have an error in your SQL syntax; check the manual that corresp
 prepare stmt4 from ' use test ' ;
 ERROR HY000: This command is not supported in the prepared statement protocol yet
 prepare stmt3 from ' create database mysqltest ';
-ERROR HY000: This command is not supported in the prepared statement protocol yet
 create database mysqltest ;
 prepare stmt3 from ' drop database mysqltest ';
-ERROR HY000: This command is not supported in the prepared statement protocol yet
 drop database mysqltest ;
 prepare stmt3 from ' describe t2 ';
 execute stmt3;
@@ -412,7 +404,6 @@ execute stmt1 ;
 prepare stmt1 from ' optimize table t1 ' ;
 prepare stmt1 from ' analyze table t1 ' ;
 prepare stmt1 from ' checksum table t1 ' ;
-ERROR HY000: This command is not supported in the prepared statement protocol yet
 prepare stmt1 from ' repair table t1 ' ;
 prepare stmt1 from ' restore table t1 from ''data.txt'' ' ;
 ERROR HY000: This command is not supported in the prepared statement protocol yet
@@ -440,11 +431,8 @@ execute stmt5;
 1
 SET sql_mode="";
 prepare stmt1 from ' flush local privileges ' ;
-ERROR HY000: This command is not supported in the prepared statement protocol yet
 prepare stmt1 from ' reset query cache ' ;
-ERROR HY000: This command is not supported in the prepared statement protocol yet
 prepare stmt1 from ' KILL 0 ';
-ERROR HY000: This command is not supported in the prepared statement protocol yet
 prepare stmt1 from ' explain select a from t1 order by b ';
 execute stmt1;
 Catalog	Database	Table	Table_alias	Column	Column_alias	Type	Length	Max length	Is_null	Flags	Decimals	Charsetnr

mysql-test/r/ps_grant.result

@@ -78,13 +78,10 @@ ERROR 42000: There is no such grant defined for user 'second_user' on host 'loca
 drop database mysqltest;
 prepare stmt3 from ' grant all on test.t1 to drop_user@localhost
 identified by ''looser'' ';
-ERROR HY000: This command is not supported in the prepared statement protocol yet
 grant all on test.t1 to drop_user@localhost
 identified by 'looser' ;
 prepare stmt3 from ' revoke all privileges on test.t1 from 
 drop_user@localhost ';
-ERROR HY000: This command is not supported in the prepared statement protocol yet
 revoke all privileges on test.t1 from drop_user@localhost ;
 prepare stmt3 from ' drop user drop_user@localhost ';
-ERROR HY000: This command is not supported in the prepared statement protocol yet
 drop user drop_user@localhost;

mysql-test/r/sp-dynamic.result

@@ -284,11 +284,11 @@ call p1()|
 select * from t1|
 id	stmt_text	status
 1	select 1	supported
-2	flush tables	not supported
+2	flush tables	supported
 3	handler t1 open as ha	not supported
 4	analyze table t1	supported
 5	check table t1	not supported
-6	checksum table t1	not supported
+6	checksum table t1	supported
 7	check table t1	not supported
 8	optimize table t1	supported
 9	repair table t1	supported

mysql-test/t/ps_1general.test

@@ -330,17 +330,11 @@ prepare stmt4 from ' show engine bdb logs ';
 execute stmt4;
 --enable_result_log
 prepare stmt4 from ' show grants for user ';
---error 1295
 prepare stmt4 from ' show create table t2 ';
---error 1295
 prepare stmt4 from ' show master status ';
---error 1295
 prepare stmt4 from ' show master logs ';
---error 1295
 prepare stmt4 from ' show slave status ';
---error 1295
 prepare stmt4 from ' show warnings limit 20 ';
---error 1295
 prepare stmt4 from ' show errors limit 20 ';
 prepare stmt4 from ' show storage engines ';
 # The output depends upon the precise order in which
@@ -427,14 +421,12 @@ prepare stmt1 from ' execute stmt2 ' ;
 prepare stmt1 from ' deallocate prepare never_prepared ' ;
 
 ## switch the database connection
---error 1295
+--error ER_UNSUPPORTED_PS
 prepare stmt4 from ' use test ' ;
 
 ## create/drop database
---error 1295
 prepare stmt3 from ' create database mysqltest ';
 create database mysqltest ;
---error 1295
 prepare stmt3 from ' drop database mysqltest ';
 drop database mysqltest ;
 
@@ -446,12 +438,12 @@ drop table t2 ;
 --error 1146
 execute stmt3;
 ## lock/unlock
---error 1295
+--error ER_UNSUPPORTED_PS
 prepare stmt3 from ' lock tables t1 read ' ;
---error 1295
+--error ER_UNSUPPORTED_PS
 prepare stmt3 from ' unlock tables ' ;
 ## Load/Unload table contents
---error 1295
+--error ER_UNSUPPORTED_PS
 prepare stmt1 from ' load data infile ''data.txt''
 into table t1 fields terminated by ''\t'' ';
 prepare stmt1 from ' select * into outfile ''data.txt'' from t1 ';
@@ -459,13 +451,12 @@ execute stmt1 ;
 ## 
 prepare stmt1 from ' optimize table t1 ' ;
 prepare stmt1 from ' analyze table t1 ' ;
---error 1295
 prepare stmt1 from ' checksum table t1 ' ;
 prepare stmt1 from ' repair table t1 ' ;
---error 1295
+--error ER_UNSUPPORTED_PS
 prepare stmt1 from ' restore table t1 from ''data.txt'' ' ;
 ## handler
---error 1295
+--error ER_UNSUPPORTED_PS
 prepare stmt1 from ' handler t1 open ';
 
 
@@ -491,11 +482,8 @@ SET sql_mode=ansi;
 execute stmt5;
 SET sql_mode="";
 
---error 1295
 prepare stmt1 from ' flush local privileges ' ;
---error 1295
 prepare stmt1 from ' reset query cache ' ;
---error 1295
 prepare stmt1 from ' KILL 0 ';
 
 ## simple explain

mysql-test/t/ps_grant.test

@@ -117,15 +117,12 @@ drop database mysqltest;
 #
 # grant/revoke + drop user
 #
---error 1295
 prepare stmt3 from ' grant all on test.t1 to drop_user@localhost
 identified by ''looser'' ';
 grant all on test.t1 to drop_user@localhost
 identified by 'looser' ;
---error 1295
 prepare stmt3 from ' revoke all privileges on test.t1 from 
 drop_user@localhost ';
 revoke all privileges on test.t1 from drop_user@localhost ;
---error 1295
 prepare stmt3 from ' drop user drop_user@localhost ';
 drop user drop_user@localhost;

sql/sp_head.cc

@@ -161,17 +161,20 @@ sp_get_flags_for_command(LEX *lex)
     }
     /* fallthrough */
   case SQLCOM_ANALYZE:
+  case SQLCOM_BACKUP_TABLE:
   case SQLCOM_OPTIMIZE:
   case SQLCOM_PRELOAD_KEYS:
   case SQLCOM_ASSIGN_TO_KEYCACHE:
   case SQLCOM_CHECKSUM:
   case SQLCOM_CHECK:
   case SQLCOM_HA_READ:
+  case SQLCOM_SHOW_AUTHORS:
   case SQLCOM_SHOW_BINLOGS:
   case SQLCOM_SHOW_BINLOG_EVENTS:
   case SQLCOM_SHOW_CHARSETS:
   case SQLCOM_SHOW_COLLATIONS:
   case SQLCOM_SHOW_COLUMN_TYPES:
+  case SQLCOM_SHOW_CONTRIBUTORS:
   case SQLCOM_SHOW_CREATE:
   case SQLCOM_SHOW_CREATE_DB:
   case SQLCOM_SHOW_CREATE_FUNC:
@@ -180,16 +183,20 @@ sp_get_flags_for_command(LEX *lex)
   case SQLCOM_SHOW_DATABASES:
   case SQLCOM_SHOW_ERRORS:
   case SQLCOM_SHOW_FIELDS:
+  case SQLCOM_SHOW_FUNC_CODE:
   case SQLCOM_SHOW_GRANTS:
   case SQLCOM_SHOW_ENGINE_STATUS:
   case SQLCOM_SHOW_ENGINE_LOGS:
   case SQLCOM_SHOW_ENGINE_MUTEX:
+  case SQLCOM_SHOW_EVENTS:
   case SQLCOM_SHOW_KEYS:
   case SQLCOM_SHOW_MASTER_STAT:
   case SQLCOM_SHOW_NEW_MASTER:
   case SQLCOM_SHOW_OPEN_TABLES:
   case SQLCOM_SHOW_PRIVILEGES:
   case SQLCOM_SHOW_PROCESSLIST:
+  case SQLCOM_SHOW_PROC_CODE:
+  case SQLCOM_SHOW_SCHEDULER_STATUS:
   case SQLCOM_SHOW_SLAVE_HOSTS:
   case SQLCOM_SHOW_SLAVE_STAT:
   case SQLCOM_SHOW_STATUS:
@@ -199,12 +206,7 @@ sp_get_flags_for_command(LEX *lex)
   case SQLCOM_SHOW_TABLES:
   case SQLCOM_SHOW_VARIABLES:
   case SQLCOM_SHOW_WARNS:
-  case SQLCOM_SHOW_PROC_CODE:
-  case SQLCOM_SHOW_FUNC_CODE:
-  case SQLCOM_SHOW_AUTHORS:
-  case SQLCOM_SHOW_CONTRIBUTORS:
   case SQLCOM_REPAIR:
-  case SQLCOM_BACKUP_TABLE:
   case SQLCOM_RESTORE_TABLE:
     flags= sp_head::MULTI_RESULTS;
     break;
@@ -262,6 +264,9 @@ sp_get_flags_for_command(LEX *lex)
   case SQLCOM_CREATE_EVENT:
   case SQLCOM_ALTER_EVENT:
   case SQLCOM_DROP_EVENT:
+  case SQLCOM_FLUSH:
+  case SQLCOM_INSTALL_PLUGIN:
+  case SQLCOM_UNINSTALL_PLUGIN:
     flags= sp_head::HAS_COMMIT_OR_ROLLBACK;
     break;
   default:

sql/sql_prepare.cc

@@ -1740,6 +1740,20 @@ static bool check_prepared_statement(Prepared_statement *stmt,
   case SQLCOM_SHOW_ENGINE_MUTEX:
   case SQLCOM_SHOW_CREATE_DB:
   case SQLCOM_SHOW_GRANTS:
+  case SQLCOM_SHOW_BINLOG_EVENTS:
+  case SQLCOM_SHOW_MASTER_STAT:
+  case SQLCOM_SHOW_SLAVE_STAT:
+  case SQLCOM_SHOW_CREATE_PROC:
+  case SQLCOM_SHOW_CREATE_FUNC:
+  case SQLCOM_SHOW_CREATE_EVENT:
+  case SQLCOM_SHOW_CREATE:
+  case SQLCOM_SHOW_PROC_CODE:
+  case SQLCOM_SHOW_FUNC_CODE:
+  case SQLCOM_SHOW_AUTHORS:
+  case SQLCOM_SHOW_CONTRIBUTORS:
+  case SQLCOM_SHOW_WARNS:
+  case SQLCOM_SHOW_ERRORS:
+  case SQLCOM_SHOW_BINLOGS:
   case SQLCOM_DROP_TABLE:
   case SQLCOM_RENAME_TABLE:
   case SQLCOM_ALTER_TABLE:
@@ -1754,6 +1768,25 @@ static bool check_prepared_statement(Prepared_statement *stmt,
   case SQLCOM_REPAIR:
   case SQLCOM_ANALYZE:
   case SQLCOM_OPTIMIZE:
+  case SQLCOM_CHANGE_MASTER:
+  case SQLCOM_RESET:
+  case SQLCOM_FLUSH:
+  case SQLCOM_SLAVE_START:
+  case SQLCOM_SLAVE_STOP:
+  case SQLCOM_INSTALL_PLUGIN:
+  case SQLCOM_UNINSTALL_PLUGIN:
+  case SQLCOM_CREATE_DB:
+  case SQLCOM_DROP_DB:
+  case SQLCOM_RENAME_DB:
+  case SQLCOM_CHECKSUM:
+  case SQLCOM_CREATE_USER:
+  case SQLCOM_RENAME_USER:
+  case SQLCOM_DROP_USER:
+  case SQLCOM_ASSIGN_TO_KEYCACHE:
+  case SQLCOM_PRELOAD_KEYS:
+  case SQLCOM_GRANT:
+  case SQLCOM_REVOKE:
+  case SQLCOM_KILL:
     break;
 
   default: